When writing transport stream packets to a file, don’t forget to add all 0xFF in the unused space at the end of the packet. This is very important, otherwise software like VLC will think that a new packet is starting early and get confused.
I’ve been digging around some other projects, and found this algorithm for calculating the checksum on section data in an MPEG2 transport stream.
The USB DVB stick I am using is a Freecom. It works, when plugged into the house aerial.
I don’t know if it’s the driver, or a hardware fault. But I don’t get transport packets until the USB transfer buffer is full.
DVB on Linux has a great API, but with the state of documentation, it’s slow progress writing against it.
I am working on a project that needs to receive over the air DVB data (FreeView, Sky etc), and interpret the stream, to find a channel and record it to disk.
